Apparatus relating to the withdrawal of air and water from steam-condensers.



D. B. MORISON.

APPARATUS REBATING TO THE WITHDRAWAL OEYAIR AND WATER mom STEAM oonmznszas.

APPLICATION YILIID APRJB. 1014.

1,130,319. Patented Mar. 2, 1915.

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RISON.

E WITHDRAWALAOF AIR AND WATER FROM STEAM GONDENSERS.

APPARATUS RELATING TO TH 'APPLIOATION FILED APR.18,191-:.

Patented Mar. 2, 1 915.

4 SHBETSSHEET 2- D. B. MORISON.

. APPARATUS RELATING TO THE WITHDEAWAL OFAIR AND WATER FROM STEAM OONDENSBRS.

APPLICATION FILED APR.18,1914.

1, 1 80,8 1 9, Patented Mar. 2, 1915.

4 SHEETSSHBET 3 Patented Mar. 2, 1915.

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MORISON.

APPLICATION FILED APR.18,1J14.

APPARATUS RELATING TO THE WITHDEAWAL OF AIR AND WATER PROM STEnM GONDENSERS.

To all whom it may concern UNITE DONALD BARNS MOIRISON, OF HARTLEPOOL, ENGLAND.

APPARATUS RELATING To rm WITHDRAWAL or AIR AND WATER snot/r STEAM- oonnnnsnns. Y

Be it known that I, DoNnLD Barns Monrson, a subject ofthe King of Great Britain and Ireland, residing at Hartlepool, in the county of Durham, England, have invented Improvements in Apparatus Relating to the lVithdrawal of Air and ater from Steam- Condensers, of which the following is a specification.

This invention relates to improvements in steam condensing apparatus working under vacuum wherein air is withdrawn from a condenser by a steam jet and is thereafter discharged as by an air pump of any type. In apparatus of this kind, it is known practice to place an auxiliary surface condenser between the steam jet and reciprocating air pump, the condensing water to the auxiliary surface condenser being supplied from the same source as the condensing water for e main condenser, as for example from the sea. In such an arrangement the heat in the steam from the steam jet which is absorbed by the condensing water is lost.

The'objcct of the present invention is to enable an air pump of given 'olumetric capacity to discharge more air than here ofore by means of apparatus wherein the steam from steam jet which discharges the aerated vapor from the condenser is condensed in heater by water suitable for use in a boiler as for example by the condensate from a condenser; the temperature of the condensing vtater for use in the heater being controlled by being cooled, when required, in the condenser, for the purpose of varying the air withdrawing capacity of the air pump in accordance with the amount of air .to withdrawn, with a minimum thermal loss. r

in the accompanying drawings, Figure 1 is diagraml'natic elevation of one embodiment of the invention; Fig. 2 is a similar view of a modified form of the apparatus; Fig. 3 is a. side view of a part of a modilied form of the apparatus, a portion thereof being in section; Fig. 4c is a side view partly in section of a modification of the form shown'in Fig. 2; Fig. 5 is aside view partly in section showing a further modification of Fig. 2:, Fig. 6 is an elevation partly in section of another form of the apparatus; Fig. 7 is an elevation partly in section of a modification of Fig. 2.

Specification of Letters Patent.

In Fig. l the aerated vapor is discharged. from a condenser a by a steam jetdevice 7) into a heater 0 of the direct contact type. Condensate is withdrawn from the condenser through the pipe 1 by the reciprocating pump 9 provided with a tank '1 into which the condensate preferentially flows and from which a quantity is delivered through the valve 6 and the pipe int the heater 0.

lVith 'the object of providing cool condensing water for the heater at times when the condensate formed in the condenser is reduced or ceases, a float controlled valve 12 is provided in the tank 7 so that water is admitted by the valve 0) through the pipe 15 into the condenser and is reduced in temperature whenever the condensate formed '11 the ccndenscr is insuliicient to condense the steam from the steam jet, the cooled water being withdrawn from the condenser by the pump 9 and delivered from the tank 7 to the heater 0, thus automatically regulatin the delivery of water to the heater and controlling its temperature by coolingit in the condenser. that is, under full load, the valve '0 does not operate, as there is always more water discharged from the condenser than is re:- quired for condensing purposes in the heat c. lint when condensation ceases, the water in the tank 7*, is in continuous circulation through the heater 0, and consequently in creases in temperature. Therefore, when the water in tank *1", falls below a certain level, the {lost opens the valve a, and water J Patented Mar. 2, 1915.

Application filed April is, 1914. Serial No. 232,957.

is by passed into the condenser and withl:

drawn from it in a cooled state and suitable for use 111 the heater 0, for condensing purposes, thus always maintaining a quantity: of cool water when no steam 18 being con densedin the condenser. The aerated vapor discharged from the condenser into the heater 0 1S Withdrawn from the heater together with the heated water through the pipe Z by the air pump it which also has its suction system connected by the valve 0 with the pump 9 and the condenser a, so that in the event of either pump becoming deranged, the other pump may be employed for Withdrawing aerated vapor and con densate from the condenser, or both pumps may be employed for Withdrawing aerated vapor and condensate from the condenser,

without the aid of the steam jet device, in the manner described in the specification of Letters Patent No. 1006975 of 1911.

In Fig.- 2, the condensate is discharged from the condenser by a rotary pump 9, and is delivered in part or wholly through the valve e and pipe f into the heater 0 from which aerated vapor is withdrawn by the pump it that is supplied with cooled water by way of the valve and pipe I: from the cooler a; in a known manner.- The heated condensate is delivered from the heater 0 through a water sealed looped pipe w into a vertical pipe 10 connected with the upper and lower portions of the condenser, a valve 2' being inserted in the pipe. Under normal conditions when the condenser is under full load, a portion of the condensate isdelirered through the pipe f into the heater 0 wherein it is heated and from whence it flows tl'irough the pipes to and it into the lower portion of the condenser where it mixes with the {condensate which is thereljiy beneficially raised in temperature. .lVhen the condensate produced in the condenser is re duced to such an extent that the water circuhding through the heater becomes too hot 'to condense the steam therein, then the valve 71 is partly or wholly closed so that water tl rozn the heater is delivered into the upper portion of the condenser over the coolinganriace, whereby a reduction in the temperature of the water is ell ccted.

In Fig. 3 the whole of the condensate is withdrawn from the condenser by the pump 1 and is de ivered into the heater 0 from which it is discharged by the pump 1 the arrangenumt being similar to that described and illustrated in the specification of Letters Patent No. 967810 ol M10. The aerated vapor is withdrawn from the heater 0 by a dry ail pump it which may be of the slide valve air admission type. he valve '0 controls tlrd quantity of water delivered by the pump (Ainto the condenser from which it is discharged by the pump to the heater 0,

-tl1c' valve 0 being operat d by a diaphragm in the device 3 that is controll d by the absolute pressure in the heater The arrangement is such that when the conih-zr-zaie dolivered from the coiull-nser is iuaullirirnt to condense the steam in the ll, er 0, the pressure in the ln-ater |.-v risizr; ca s s the diaphragm in the device 0 to open the valve 55,1) and thus admit water from the dischargiofthe puniplr into the (.Olltiullfitl', wh reby the tenipeiiathre ol" :the coinlene iug n al r deli\ cred ito the heater can .bc (:onlroil il.

Fig. 4 a modification ol' Fin. 5!. and in which condensate is withdrawn from the condenser through the pipe y by the pump y, and aerlrted vapor is withdrawn from th hraler 0, together it may be with the heat-0d water, through the pipe 6 by the pump it. Condensing water is supplied from the tank pump 4.

r to the heater 0 under the control of a valve 0, and may be discharged from the heater into the condenser through thepipes w and Y 14, valves 7 and i being provided whereby the temperature of the water can be controlled in the manner described with reference to F ig. 2.- The discharge pipe from the pump 9 contains a non-return valve 2 which aiitomatically closes and prevents the leakage of air into the vacuum system through the pipe should the supply of condensate cease.

Fig. 5 is a further modification of Fig. 2. In this example the aerated vapor is withdrawn from the heater 0' by a steam jet device l by which it is delivered into the Water jet air ejector 2 that is supplied under pressure with water from the tank 3 by the Condensate is discharged from the condenser to the tank 3 by a two-stage pump 5 the pipe f being connected to the first stage pump so that a quantity of water may he delivered into the heater 0 through the valve e, the heated water being delivered from the heater through the pipe winto the condenser in the manner hereinbefore described whereby the temperature of the water can be controlled.

In Fig. 6 the aerated vapor is withdrawn from the heater 0, it may be together with the heated condensate, by a mechanically operated air expelling device 5. The temperature of the condensing water discharged from the heater 0 may, when required, be controlledby the valves 79 and 2' by which the water may be cooled in the condenser in the manner hereinbefore described.

Fig. 7 is a modification of Fig. 2, and in which the aerated vapor is withdrawn from the heater 0 by the mechanically operated rotary air expelling device 6, the temperature of the condensing water for use in the heater 0 being controlled bythe valve 2' in the manner hereinbefore described;

'What I claim is 1. In steam condensing apparatus, the combination with a main steam condenser ot a steam jet device arranged to discharge aerated vapor from the condenser into a heater, :1 pump for discharging the conden sate from sa d condenser, means'for admitting condensate discharged from said pump into said heater, means for )vithd-ravving the an 'atcd vapor and heated water from said heater and means for cooling'said heated water in the condenser when required, for the purpose specified. I

52. In steam condensing apparatus, the combination with a main steam condenser of a steam jet device arranged todischarge aerated vapor from the condenser into a direct contact heater, a purnp'for discharg ing the comlensate from said condenser into a tank, a valve for supplying Water from said tank into said heater, means for Withdrawing the aerated vapor and heated Water drawing the aerated vapor from said heater,

a water sealed looped pipe connecting the heater with the upper and lower portions of said condenser and means whereby the heated water can he delivered into the upper or lower portions of the condenser tor the purpose specified.

4. in steam coiidensing apparatus, the combination with a main steam condenser of a steam jet device arranged to discharge aerated vapor from the condense" into a direct contact heater, a pump for discharging the condensate from said condenser into a tank, a valve tor supplying water trom said tank into said heater, a reciprocating air pump for withdrawing aerated vapor together with heated water from said heater and means for passing heated water withdrawn from said heater into the condenser when required, for the purpose specified.

5. In steam condensing apparatus, the combination with a main steam condenser of a steam jet device a'ranged to (:lischarge aerated vapor from the condenser into a direct contact heater, a reciprocating air pump 'l'or discharging the condensate from said condenser into a tank, a valve for supplying water from said tank into said heater, an at her ruziprocating air pump for withdrawing aerated Yapor together with heated water from said heater, and means for passing heated water from said heater into the condenser when required, for the purpose specified.

3. ln steam condensing apparatus, the combination with a main steam condenser of a steam jet device arranged to discharge aerated vapor i'roin the condenser into a dire t contact heateiu a reciprocating air pump lor discharging the condensate t'rom said condenser into a tank, a valve for supplying water l' inn said tanl-c into said heater, another ""o ating air pump for withdrawing minted \upol' and heated water from id heater. :1 water scaled looped pipe connecting the heater with the upper and lower portions of said condenser and Valves Wherehy h ated water may be delivered into the upper or lower portion of the condenser, tor the purpose specified.

7. In steam condensing apparatus, the C()1nl -i1]tltl(ul with a main scam condenser of a steam jet device arranged to discharge aerated vapor from the condenser into a direct contact heater, a pump for discharging the condensate from said condenser, a valve for admitting condensate discharged from said pump into said heater, a reciprocating air pump for withdrawing aerated Yapor from said heater, means for cooling said air pump, a water sealed looped pipe connecting said heater witlrthe upper and lower portions of said condenser and a valve whereby heated water can he delivered into the upper or lower portions of the condenser, for the purpose specified.

8. The combinationwit-h a steam condenser having separate outlets for aerated Vapor and for condensate, of a steam jet device connected to the aerated vapor outlet, a-

heater into which said steam jet device discharges, a pump connected to said heater tor withdrawing the aerated \apor and heated water therefrom, means for cooling the heat-- ed water in said condenser, a pump connected to the condensate outlet from said condenser, and means for connecting together the suction systems of both pumps for the purpose of withdrawing aerated Vapor and condensate direct from the condenser when re-ipiired.

9. The combination with a steam condenser having separate outlets for aerated vapor and for condensate, of a steam jet device connected to the aerated'vapor outlet, a heater into which said steam jet device discharges. a pump connected to said heater for withdrawing the aerated vapor therefrom, a water sealed looped pipe connecting said heater with said condenser, a pump connected to the condensate outlet from said condenser, and means for connecting together the suction systems of both pumps for the purpose of withdrawing aerated rapor and condensate direct from the con denser when required.

Signed ai West llartlepool, in the county of Durham, ilngland, this sixth day ot April DONALD BARNES. MORXSON. \Vitnesses:

Janus RUssnLL, ALAN LaxcnLo'r Buowsr TUCKER.

LOO 

